Tektronix Grass Valley 4000, Installation And Service

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2-33
Installation
WARNING
To reduce the risk of electric shock, do not perform any servicing other than
that contained in the operating instructions unless you are qualified to do so.
Perform the following procedure to install the Redundant Power Supply.
1. Ensure that the Primary and Redundant Power Supplies are disconnected
from all power sources.
2. If you are installing a redundant supply into an already existing system,
remove the rear panel access covers (right and left sides) of the Redundant and
(if necessary) the Primary Power Supply.
3. Make sure you have read the warning on the previous page about power
supply unit types.
4. Remove (do not discard) the hex nuts and lock washers that secure the red and
black power cables on the Primary power supply. (Leave the cables positioned
over their respective studs.)
5. Install the new lock washers and stand-offs provided with the redundant
supply kit over the threaded ends of the existing studs. Using the “deep well”
3/8” socket, and the torque wrench, torque the stand-offs to 80 inch pounds
(6.67 foot/pounds) +/- 5%.
6. Remove the connector and cable slot covers from the bottom of the Primary
Power Supply (see
Figure 2-20 for Pioneer Supply Units and Figure 2-21 for
Todd Power Supply Units).
7. Mount the Redundant Power Supply chassis underneath the Primary Power
supply in the same manner as the Primary Power Supply was installed (see
preceding pages).
8. Tighten the 8 captive screws that secure the Redundant chassis to the Primary
chassis
9. Place the pair of new black cables over the appropriate studs in the Primary
and Redundant Power Supplies, routing the cables through the slot in the
bottom of the Primary supply and the top of the Redundant supply. (The
colors must match those of the existing cables.)
NOTE: The black cables must go in the slot before the red cables; the black cables are
shorter than the red.